The three female leads of “Friends” seem to make girls’ night trios an at least quarterly event. Cox posted another group shot from last June with Kudrow and Aniston, when they were apparently celebrating her birthday.

She tagged all the “Friends” (besides Matthew Perry, who doesn’t have an Instagram account) and added the caption, “And now we’re Instagram FRIENDS too. HI INSTAGRAM.”

Lots of other evidence of the friendship among “Friends” exists out there — including a recent, sweet selfie with Cox and Perry, captioned, “Guess who I had lunch with today….I KNOW!! Could I BE any happier? #realfriends”